I pulled a pair of Valvo EL 84 tubes from an old Grundig radio. I have a SE 84 C amp. What is the best and safest way to check if these tubes are good? I was not able to power up the Grundig to see if the tubes worked in it. I do not have access to a tube tester.Thanks! ???

Valvo are indeed nice(but then again that says nothing, some of my mullards are branded valvo, some are produced in Holland for philiphs and so on, what are the tube's codes that will give us something to work with., the VAlvo (holland) that i had were good, but just short of the mullards tough, but close and my second choice, in a 10 types of el84 test/comparison.

TEST the tubes!!!!!!a MULLARD el84 that I put in my amp burnt something inside lucky me that was one day before the amp was due to leave home for a full EV massage.

Always test the tubes! find a shop that has a tube tester in your city, thatb is my advice.

Thanks Lightmaster,I am going to have them tested when I find a local shop. The "markings" on the tubes are FX 3 DG 9. The "F" is faded, so I am not sure if it is a "F" One has 025 on the top,the other has 127. The radio they were pulled from was purchased in 1958.